How to calculate the magnetic field of Earth. Explain how scientists know that the Earth has its own magnetic field How is the Earth's magnetic field generated? How is the strength of the magnetic field determined? How to find electric field from magnetic field?
In the study of the Earth's interior, magnetic field data is also used. How does the Earth's magnetic field help in understanding the Earth's interior? A. It has no relation to the Earth's interior structure. B. It can only tell us about the surface temperature. C. Changes in the ...
Research reveals that a weakened magnetic field between 591 and 565 million years ago might have triggered higher oxygen levels, aiding the development of complex life. An unusual reduction in the strength of the Earth’s magnetic field between 591 and 565 million years ago coincided with a signi...
Most often used for geomagnetic measurements are the fluxgate magnetometer, which gives vector components, and the proton precession magnetometer, which measures field intensity.Auster, HUPhysics TodayH.-U. Auster, How to measure Earth's magnetic field. Phys. Today 61(2), 76 (2008). ISSN:...
Professor: Okay, keep in mind that solar wind is electrically charged, which means that it interacts with the magnetic field as electromagnetic theory tells us.Okay, how does it interact?Earth, magnetic field deflects most the solar wind, makes it flow around the earth without getting very clo...
Life as we know it could not exist without Earth's magnetic field and its ability to deflect dangerous ionizing particles from the solar wind and more far-flung cosmic rays. It is continuously generated by the motion of liquidironin Earth'souter core, a phenomenon called the geodynamo. ...
Some animals can sense the earth's magnetic field (磁场),while humans can't.This magnetic field guides a certain kind of fish when they swim a long way to a place and then back.How can this kind of fish do that?It is still a mystery.Scientists have no good an...
Professor Peter Hore at the University of Oxford says it could be that birds can ‘see’ the Earth’smagnetic field, although they don’t know that for sure. 牛津大学的彼得·霍尔教授说,这也许是因为鸟类可以 “看到” 地球的磁场,不过科学家们还不能完全确定这一点。
From the brightness variations of its host star, anexoplanet’s size and other properties can be determined. In order to avoid mistakes, the star’s magnetic field is decisive. 700 light years away from Earth in the constellation Virgo, the planet WASP-39b orbits the star WASP-39. The gas...
But don't worry, X-rays can't penetrate from outer space to the Earth's surface. Read more in How X-rays Work. Gamma rays: Gamma rays have the most energy and shortest wavelength of the entire spectrum. Nuclear explosions and radioactive atoms generate these rays. Gamma rays can kill ...